Pick a field

What do you want to master?

12 subjects · 129 bite-size lessons · free to start, no sign-up

Mind & Thinking

思维与心理3 subjects

Spot how your brain fools you — think clearly, reason sharply.

Thinking Traps思维陷阱5 lessons

Think Clearly: Logic & Critical Thinking逻辑与批判性思维12 lessons

Psychology, Made Simple心理学入门13 lessons

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Cognitive Biases You Commit Daily

Beyond the 50 thinking traps — a systematic course closer to daily decisions.

Course outline (content not built yet)

·How your brain fools you while shopping
·Cognitive manipulation on social media
·Why you overestimate yourself
·Traps in group decisions

Work Skills

职场硬技能4 subjects

Write, speak, ship, analyze — skills you use at work today.

Copywriting Foundations文案写作入门5 lessons

Public Speaking演讲与表达5 lessons

Project Management项目管理入门5 lessons

UX Design FoundationsUX 设计入门5 lessons

Money & Business

财富与商业1 subject

Understand how money moves — make smarter calls.

Money & Economics, Made Simple看懂钱与经济12 lessons

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Personal Finance 101: Don't Get Fleeced

Interest, compounding, inflation, funds — money basics in plain language.

Course outline (content not built yet)

·Compounding: time's magic and its traps
·How inflation quietly eats your money
·Reading a product's real returns
·Spotting common financial scams

Tech & AI

技术与 AI1 subject

See how AI applications are actually built, from zero.

The Modern AI Developer现代 AI 开发者36 lessons

Creative & Aesthetics

创意与审美1 subject

Train your eye — make things that actually look good.

Cinematic Eye拍出有审美的片21 lessons

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Languages

语言2 subjects

Actually use a language right — starting with the most common traps.

🔤Use English Right把英语用对3 lessons 🧳Travel English Survival Kit旅游英语急救包7 lessons

K12 Education

K12 教育

Structured courses for K-12 learners — in the works.

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Math Reasoning & Number Sense Traps

Not drill-and-kill — spot the intuition traps in ratios, percentages, probability.

Course outline (content not built yet)

·Why proportion intuition fools you
·Percentage traps: +50% then −50% ≠ back to start
·The lies of averages (Simpson's paradox, intro)
·Probability intuition vs. real probability
·Word problems: turning sentences into equations

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Coding Concepts: Predict the Output

Start coding by predicting output — training logic, not memorizing syntax.

Course outline (content not built yet)

·Variables, loops, conditionals: read before you write
·Predict the output (quiz already live)
·Spot the bug at a glance
·Classic Python gotchas: mutable defaults, closures…
·Algorithmic thinking: sorting & searching intuition

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Critical Reading: Don't Get Played by the Text

Reading comprehension is reasoning — catch assumptions, sleights, and what's left unsaid.

Course outline (content not built yet)

·Fact vs. opinion vs. opinion-in-disguise
·Finding the author's hidden assumptions
·Argument flaws: equivocation, hasty generalization
·Spotting clickbait and emotional manipulation
·Exam reading-comprehension strategies

🌱 More coming